MODIFIKATSIYALANGAN BENTONIT YORDAMIDA IFLOSLANGAN SUVDAN GUMIN KISLOTASINI ADSORBSIYALANISH TERMODINAMIKASI
Referat
Sanoat oqova suvlari tarkibida gumin kislotasining miqdori oshganida ifloslangan suv tarkibini pH ko‘rsatkichi pasayib, kislotali muhit yaratilishi mumkin. Bu jarayon suv ekotizimlari uchun noqulay va potentsial xavfli bo'lib, undan suvda yashovchi organizmlar jiddiy ta'sirlanishi kuzatiladi. Kislotalanish natijasida suv organizmlarining fiziologik xususiyatlari, masalan, nafas olish, metabolizm va minerallarning tanada saqlanishi kabi asosiy funksiyalarini buzilishi sodir bo‘ladi. Tadqiqot ishida gumin kislota konsentratsiyasi 6 mg/L dan 90 mg/L gacha bo‘lgan diapazonda, hajmi 0,1 g/L va harorat 293 K dan 313 K gacha oraliqda olib boridi va bu jarayonlarning samaradorligi va kinetik xususiyatlari baholandi. Tajribalar natijasida adsorbentlarning pHpzc qiymatlari PBG uchun 6,28; TMAB uchun 6,56 va TEAB uchun 6,98 ga teng ekanligi aniqlandi. TEAB modifikatsiyalangan bentonit 313 K haroratda 73 mg gumin kislota adsorbsiyalanishi aniqlangan va bir xil 6 mg/L konsentratsiyada adsorbatni 89% gacha yo‘qotilishini ko‘rsatdi. Modifikatsiyalangan bentonitlar ustida gumin kislotaning maksimal adsorbsiyasi pH 3,5 da kuzatildi. Modifikatsiyalangan bentonitlarga gumin kislotasining adsorbsiyalanish termodinamik ko’rsatkichlari hisoblandi.
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